/*
 * Copyright (C) 2017 Baidu, Inc. All Rights Reserved.
 */
package com.sskj.gocoin.utils;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.Drawable;
import android.media.ExifInterface;
import android.util.Log;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.view.animation.LinearInterpolator;
import android.widget.ImageView;

import com.bumptech.glide.request.RequestOptions;
import com.bumptech.glide.request.target.SimpleTarget;
import com.bumptech.glide.request.transition.Transition;
import com.sskj.common.base.GlideApp;
import com.sskj.gocoin.R;
import com.sskj.gocoin.common.App;
import com.sskj.gocoin.common.GlideRoundTransformCenterCrop;


public class ImageUtil {
    private static final String TAG = "CameraExif";

    public static int exifToDegrees(int exifOrientation) {
        if (exifOrientation == ExifInterface.ORIENTATION_ROTATE_90) {
            return 90;
        } else if (exifOrientation == ExifInterface.ORIENTATION_ROTATE_180) {
            return 180;
        } else if (exifOrientation == ExifInterface.ORIENTATION_ROTATE_270) {
            return 270;
        }
        return 0;
    }

    // Returns the degrees in clockwise. Values are 0, 90, 180, or 270.
    public static int getOrientation(byte[] jpeg) {
        if (jpeg == null) {
            return 0;
        }

        int offset = 0;
        int length = 0;

        // ISO/IEC 10918-1:1993(E)
        while (offset + 3 < jpeg.length && (jpeg[offset++] & 0xFF) == 0xFF) {
            int marker = jpeg[offset] & 0xFF;

            // Check if the marker is a padding.
            if (marker == 0xFF) {
                continue;
            }
            offset++;

            // Check if the marker is SOI or TEM.
            if (marker == 0xD8 || marker == 0x01) {
                continue;
            }
            // Check if the marker is EOI or SOS.
            if (marker == 0xD9 || marker == 0xDA) {
                break;
            }

            // Get the length and check if it is reasonable.
            length = pack(jpeg, offset, 2, false);
            if (length < 2 || offset + length > jpeg.length) {
                Log.e(TAG, "Invalid length");
                return 0;
            }

            // Break if the marker is EXIF in APP1.
            if (marker == 0xE1 && length >= 8
                    && pack(jpeg, offset + 2, 4, false) == 0x45786966
                    && pack(jpeg, offset + 6, 2, false) == 0) {
                offset += 8;
                length -= 8;
                break;
            }

            // Skip other markers.
            offset += length;
            length = 0;
        }

        // JEITA CP-3451 Exif Version 2.2
        if (length > 8) {
            // Identify the byte order.
            int tag = pack(jpeg, offset, 4, false);
            if (tag != 0x49492A00 && tag != 0x4D4D002A) {
                Log.e(TAG, "Invalid byte order");
                return 0;
            }
            boolean littleEndian = (tag == 0x49492A00);

            // Get the offset and check if it is reasonable.
            int count = pack(jpeg, offset + 4, 4, littleEndian) + 2;
            if (count < 10 || count > length) {
                Log.e(TAG, "Invalid offset");
                return 0;
            }
            offset += count;
            length -= count;

            // Get the count and go through all the elements.
            count = pack(jpeg, offset - 2, 2, littleEndian);
            while (count-- > 0 && length >= 12) {
                // Get the tag and check if it is orientation.
                tag = pack(jpeg, offset, 2, littleEndian);
                if (tag == 0x0112) {
                    // We do not really care about type and count, do we?
                    int orientation = pack(jpeg, offset + 8, 2, littleEndian);
                    switch (orientation) {
                        case 1:
                            return 0;
                        case 3:
                            return 180;
                        case 6:
                            return 90;
                        case 8:
                            return 270;
                        default:
                            return 0;
                    }
                }
                offset += 12;
                length -= 12;
            }
        }

        Log.i(TAG, "Orientation not found");
        return 0;
    }

    private static int pack(byte[] bytes, int offset, int length,
                            boolean littleEndian) {
        int step = 1;
        if (littleEndian) {
            offset += length - 1;
            step = -1;
        }

        int value = 0;
        while (length-- > 0) {
            value = (value << 8) | (bytes[offset] & 0xFF);
            offset += step;
        }
        return value;
    }

    public static int calculateInSampleSize(
            BitmapFactory.Options options, int reqWidth, int reqHeight) {
        // Raw height and width of image
        final int height = options.outHeight;
        final int width = options.outWidth;
        int inSampleSize = 1;

        if (height > reqHeight || width > reqWidth) {

            final int halfHeight = height / 2;
            final int halfWidth = width / 2;
            // Calculate the largest inSampleSize value that is a power of 2 and keeps both
            // height and width larger than the requested height and width.
            while ((halfHeight / inSampleSize) >= reqHeight
                    && (halfWidth / inSampleSize) >= reqWidth) {
                inSampleSize *= 2;
            }
        }

        return inSampleSize;
    }

    /**
     * 将图片旋转一圈
     *
     * @param context
     * @param ivSwap
     */
    public static void rotateImageOnce(Context context, ImageView ivSwap) {
        Animation operatingAnim = AnimationUtils.loadAnimation(context,
                R.anim.image_rotate_once);
        LinearInterpolator lin = new LinearInterpolator();
        operatingAnim.setInterpolator(lin);
        if (operatingAnim != null) {
            ivSwap.startAnimation(operatingAnim);
        }
    }

    private static RequestOptions optionsRound;
    private static RequestOptions optionsNormal;
    private static RequestOptions optionsCircle;

    static {
        optionsRound = new RequestOptions()
                .placeholder(R.mipmap.app_logo)
                .error(R.mipmap.app_logo)
                .transform(new GlideRoundTransformCenterCrop(20));
    }

    static {
        optionsCircle = new RequestOptions()
                .circleCrop()
                .placeholder(R.mipmap.app_logo)
                .error(R.mipmap.app_logo);
    }


    static {
        optionsNormal = new RequestOptions()
                .placeholder(R.mipmap.app_logo)
                .error(R.mipmap.app_logo);
    }


    /**
     * 设置圆形图片
     *
     * @param url
     * @param imageView
     */
    public static void setCircleImage(Object url, ImageView imageView) {
        GlideApp.with(App.INSTANCE).load(url).apply(optionsCircle).into(imageView);
    }

    /**
     * 返回圆形图片Drawable
     *
     * @param url
     * @param drawableBack
     */
    public static void setCircleImageReady(Object url, DrawableBack drawableBack) {
        GlideApp.with(App.INSTANCE).load(url).apply(optionsCircle).into(new SimpleTarget<Drawable>() {
            @Override
            public void onResourceReady(Drawable resource, Transition<? super Drawable> transition) {
                drawableBack.back(resource);
            }
        });
    }

    /**
     * 设置图片
     *
     * @param url
     * @param imageView
     */
    public static void setImage(Object url, ImageView imageView) {
        GlideApp.with(App.INSTANCE).load(url).apply(optionsNormal).into(imageView);

    }

    /**
     * 设置圆角矩形图片
     *
     * @param url
     * @param imageView
     */
    public static void setRoundImage(Object url, ImageView imageView) {
        GlideApp.with(App.INSTANCE).load(url).apply(optionsRound).into(imageView);
    }

//    /**
//     * 模糊图片
//     * @param url
//     * @param imageView
//     * @param radius
//     */
//    public static void flurImage(Object url, ImageView imageView, int radius) {
//        GlideApp.with(App.INSTANCE).load(url)
//                .apply(bitmapTransform(new BlurTransformation(radius)))
//                .into(imageView);
//    }

    /**
     * 返回圆形图片Bitmap
     *
     * @param url
     * @param bitmapBack
     */
    public static void bitmapCircle(Object url, BitmapBack bitmapBack) {
        GlideApp.with(App.INSTANCE)
                .asBitmap()
                .load(url)
                .apply(optionsCircle)
                .into(new SimpleTarget<Bitmap>() {
                    @Override
                    public void onResourceReady(Bitmap resource, Transition<? super Bitmap> transition) {
                        bitmapBack.back(resource);
                    }
                });
    }

    public interface BitmapBack {
        void back(Bitmap bitmap);
    }

    public interface DrawableBack {
        void back(Drawable drawable);
    }
}
